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- T. F. MAI-1BR.

HOUSE RAISING APPARATUS.

No. 832,811. v Patented-Dec. 22, 1885.

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T. F. MAHER.

. HOUSE RAISING APPARATUS.

N0. 332 811. Patented Dec. 22,1885,

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NITED STATES PATENT OFFICE.

THOMAS F. MAHER, OF SAN FRANCISCO, OALIFORN IA.

HOUSE-RAISING APPARATUS.

SPECIFICATION forming part of Letters Patent- No. 332,811, dated December 22, 1885.

Application filed October 27, 1885. Serial No. 191,107. (No model.)

To all whom it may concern.-

-I hereby declare the following to be a full, clear, and exact description thereof.

My invention relates to the class of houseraising apparatus; and it consists in peculiarly-constructed adjustable frames and nuts, adapted to be fitted to their places and the work continued without having to remove the lifting-screw during the whole operation.

The object of my invention is to provide means for completing the full operation of raising or lowering ahouse without having to remove the lifting-screws.

Referring to the accompanying drawings, Figure l is a perspective view of my houseraising apparatus. Fig. 2 is a perspective view of the nut D. Fig. 3 is a plan of same, a portion being broken away to show the dowel-pins. Fig. 4 is a view of the removable strips. Fig. 5 is a perspective view showing the parts of the nut separated.

A is the screw, of suitable dimensions, provided on its top with the usual bearing-plate, a, upon which the weight rests.

B is a frame, made of about the usual size, but differing from the ordinary frames in two particularsnamely, an opening, I), in one end or side guarded by swinging strips b, and the ledges b in its sides. The opening is to permit the frame to be fitted to place around the screw, and the ledges are to receive and support the removable and adjustable crosspieces 0. These pieces are provided with iron bearing-plates c at their centers, Fig. 4.

D is a nut having a central flange, d, above which the body of the nut is square to receive a wrench, and below it is cylindrical. The nut is a two-part one, being divided into two equal parts, readily separable, and fitted together by dowel-pins d and secured by swinging bails or clamps d". These clamps are pivoted to the flange of the nut, one on each part, and each is adapted to fit over and to be removed from a shoulder, d, on the opposite part of the nut. When in place, the clamps are seated in rabbets on the flange, so as to be out of the way, and are secured by pins d passing through them and the intervening flange.

The operation is as follows: One frame being first put in place, and the screw supported by means of one of the nuts resting through its flange on the bearing-plates of the'crosspieces of the frame, and tightened down by a wrench against said pieces, the said screw is then turned by a wrench engaging its top, squared at 72 until it is elevated to its limit, carrying the weight up with it. Now, without removing the screw, a second frame is taken and fitted around the screw, this being possible because of its opening I). It rests on the first frame. The guard-strips b are then adjusted, and the cross pieces 0 put in place. A second nut is then taken, its parts separated, and fitted around the screw at a point abovethe cross-pieces G of the second frame. The parts of the nut when fitted on the screw are secured by their clamps, and the nut is then tightened down against the cross-pieces O. The screw is again turned, so that in rising it passes up out of the first. nut, and the weight is then borne entirely by the second nut. When the limit of the screwis a second time reached, a third frame is fitted on the second around the screw, and the cross-pieces of the first frame being 110w free may be used for the third, and the first nut being also free may be fitted on the screw above the third frame, and so on to the end of the operation. It will thus be seen that the screw need not be removed during the entire operation, but with two such nuts as I have described two sets of cross-pieces for the frames and as many frames as will equal the height to be attained the screw can remain in place and raise the weight as high as desired.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In house-raising.apparatus, the combination of a screw on which the weight rests,

separable or divided nuts adapted to be fitted IOO p 2. In house-raising apparatus, the combi nation of a screw on which the weightrests, separable or divided nuts adapted to be fitted over the screw at any portion, frames adapted to be fitted around the screw, and removable cross-pieces supported by the frames and forming bearings for the nuts, substantially as described.

3. In house-raising apparatus, the combination of ascrew on which the weight rests, separable or divided nuts having flanges and adapted to be fitted over the screw at any portion, frames adapted to be fitted around the screw, and removable cross-pieces supported by the irames and forming hearings for the flanges of the nuts, substantially as described.

4. In house-raising apparatus, the screwelevating nut D, having a flange, d, and consisting of two independent parts, and the .pivoted bails or clamps d for holding the parts together, substantially as described.

5. In house'raising apparatus, the screwelevating flanged nut D, consisting of two independent parts united by dowel-pins d, and

the pivoted bails or clamps d for holding the parts together, substantially as described.

6. In house-raising apparatus, the frame B, having an opening, I), in one side or end by which it can be fitted around the lifting-screw while the. latter is in place, substantially as described.

7. In house-raising apparatus, the frame B, having an opening, I), in one side or end by which it can be fitted around the lifting-screw,

and ledges If, in combination with the removable cross-pieces 0, supported on the ledges, substantially as described.

8. In house-raising apparatus, the screw supporting the weight, and separable or divided nuts to be fitted on said screw, in combination with frames B, having an opening, b, on one side or end by which they can be fitted around the screw, and ledges b in their sides, and the removable crosspieces G, supported on the ledges and supporting the flanged nuts, substantially as described.

9. In house-raising apparatus, the screw supporting the weight, and frames constructed to fit around the screw while in place, in combination with the flanged nuts D, consisting of two independent parts united by dowelpins and held together by pivoted clamps d", said nuts being fitted on the screw while in place and bearing on the frames, substantially as described.

10. In house-raising apparatus, the combination of the screw A, supporting the weight, the frames 13, having openings 1), and removable cross-pieces 0, having bearings c, and the two-part separable flanged nuts D, fitting on the screw and bearing on the cross-pieces, Substantially as described.

In witness whereof I have hereunto set my hand.

THOMAS F. MAHER. Witnesses:

S. H. NoURsE, II. 0. LEE. 

